package com.cheneylo.bigevent.controller;

import com.cheneylo.bigevent.pojo.Result;
import com.cheneylo.bigevent.pojo.User;
import com.cheneylo.bigevent.service.UserService;
import com.cheneylo.bigevent.utils.JwtUtil;
import com.cheneylo.bigevent.utils.Md5Util;
import com.cheneylo.bigevent.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private  UserService userService;
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password) {
        //
        User u=userService.findByUserName(username);
        if(u==null){
            //没有占用
            //注册
            userService.register(username,password);
            return Result.success();
        }
        else
        {
            //占用
            return Result.error("用户名已被占用");
        }
        }
        @PostMapping("/login")
          public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
         //根据用户名查询用户
            User loginUser = userService.findByUserName(username);
            //判断用户是否存在
            if(loginUser==null)
            {
                return Result.error("用户不存在");

            }
            //判断密码是否正确 loginUser对象中的password是密文
            if(Md5Util.getMD5String(password).equals(loginUser.getPassword()))
            {
                Map<String,Object> claims=new HashMap<>();
                claims.put("id",loginUser.getId());
                claims.put("username",loginUser.getUsername());
                String token = JwtUtil.genToken(claims);
                return Result.success(token);
            }
          return Result.error("密码错误");
        }
        @GetMapping("/userInfo")
        public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
         //根据用户名查询用户
           /* Map<String, Object> map = JwtUtil.parseToken(token);
            String username = (String) map.get("username");*/
            Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String)map.get("username");
            User user = userService.findByUserName(username);
            return Result.success(user);
        }
        @PutMapping("/update")
        public Result update(@RequestBody @Validated User user){
          userService.update(user);
          return Result.success();
        }
        @PatchMapping("/updateAvatar")
        public Result updateAvatar(@RequestParam @URL String avatarUrl){
            Map<String, Object> map=ThreadLocalUtil.get();
            Integer id = (Integer) map.get("id");
            userService.updateAvatar(avatarUrl);
        return Result.success();
        }
        @PatchMapping("/updatePwd")
        public Result updatePwd(@RequestBody Map<String,String> params){
        //校验参数
        String oldPwd=params.get("old_pwd");
        String newPwd=params.get("new_pwd");
        String rePwd=params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd))
            return Result.error("缺少必要的参数");
        //原密码是否正确
            //调用userService根据用户名拿到密码再和old_pwd进行比对
            Map<String,Object> map = ThreadLocalUtil.get();
            String username = (String)map.get("username");
            User loginUser = userService.findByUserName(username);
            if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
                return Result.error("原密码填写不正确");
            }
            //newPwd和rePwd是否一样
            if(!rePwd.equals(newPwd))
            {
                return Result.error("两次填写的密码不一样");
            }


            //调用service完成密码更新
            userService.updatePwd(newPwd);
            return Result.success();
        }
    }

